Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis
Reactive oxygen species and nitrogen species (ROS and RNS), produced in a wide range of physiological process even under low oxygen availability, are among the main stressors found in the environment. Strategies developed to combat them constitute key features in bacterial adaptability and survival....
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ftconicet:oai:ri.conicet.gov.ar:11336/123265 2023-10-09T21:46:40+02:00 Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis Solar Venero, Esmeralda Clara Ricardi, Martiniano María Gomez Lozano, María Molin, Søren Tribelli, Paula Maria López, Nancy Beatriz application/pdf http://hdl.handle.net/11336/123265 eng eng Springer Tokyo info:eu-repo/semantics/altIdentifier/doi/10.1007/s00792-019-01110-x http://hdl.handle.net/11336/123265 Solar Venero, Esmeralda Clara; Ricardi, Martiniano María; Gomez Lozano, María; Molin, Søren; Tribelli, Paula Maria; et al.; Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis; Springer Tokyo; Extremophiles; 23; 5; 6-2019; 587-597 1431-0651 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTIOXIDATIVE ENZYMES BIOFILMS CHEMOTAXIS LOW OXYGEN AVAILABILITY REACTIVE OXYGEN SPECIES RNA-SEQ https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00792-019-01110-x 2023-09-24T18:30:04Z Reactive oxygen species and nitrogen species (ROS and RNS), produced in a wide range of physiological process even under low oxygen availability, are among the main stressors found in the environment. Strategies developed to combat them constitute key features in bacterial adaptability and survival. Pseudomonas extremaustralis is a metabolic versatile and stress resistant Antarctic bacterium, able to grow under different oxygen conditions. The present work explores the effect of oxidative stress under low oxygen conditions in P. extremaustralis, by combining RNA deep sequencing analysis and physiological studies. Cells grown under microaerobiosis exhibited more oxidative damage in macromolecules and lower survival rates than under aerobiosis. RNA-seq analysis showed an up-regulation of genes related with oxidative stress response, flagella, chemotaxis and biofilm formation while chaperones and cytochromes were down-regulated. Microaerobic cultures exposed to H2O2 also displayed a hyper-flagellated phenotype coupled with a high motility behavior. Moreover, cells that were subjected to oxidative stress presented increased biofilm formation. Altogether, our results suggest that a higher motile behavior and augmented capacity to form biofilm structures could work in addition to well-known antioxidant enzymes and non-enzymatic ROS scavenging mechanisms to cope with oxidative stress at low oxygen tensions. Fil: Solar Venero, Esmeralda Clara. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina Fil: Ricardi, Martiniano María. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Fisiología, Biología Molecular y Neurociencias. ... Article in Journal/Newspaper Antarc* Antarctic CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Argentina Esmeralda ENVELOPE(-62.700,-62.700,-74.433,-74.433) Extremophiles 23 5 587 597 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANTIOXIDATIVE ENZYMES BIOFILMS CHEMOTAXIS LOW OXYGEN AVAILABILITY REACTIVE OXYGEN SPECIES RNA-SEQ https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTIOXIDATIVE ENZYMES BIOFILMS CHEMOTAXIS LOW OXYGEN AVAILABILITY REACTIVE OXYGEN SPECIES RNA-SEQ https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Solar Venero, Esmeralda Clara Ricardi, Martiniano María Gomez Lozano, María Molin, Søren Tribelli, Paula Maria López, Nancy Beatriz Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis |
topic_facet |
ANTIOXIDATIVE ENZYMES BIOFILMS CHEMOTAXIS LOW OXYGEN AVAILABILITY REACTIVE OXYGEN SPECIES RNA-SEQ https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Reactive oxygen species and nitrogen species (ROS and RNS), produced in a wide range of physiological process even under low oxygen availability, are among the main stressors found in the environment. Strategies developed to combat them constitute key features in bacterial adaptability and survival. Pseudomonas extremaustralis is a metabolic versatile and stress resistant Antarctic bacterium, able to grow under different oxygen conditions. The present work explores the effect of oxidative stress under low oxygen conditions in P. extremaustralis, by combining RNA deep sequencing analysis and physiological studies. Cells grown under microaerobiosis exhibited more oxidative damage in macromolecules and lower survival rates than under aerobiosis. RNA-seq analysis showed an up-regulation of genes related with oxidative stress response, flagella, chemotaxis and biofilm formation while chaperones and cytochromes were down-regulated. Microaerobic cultures exposed to H2O2 also displayed a hyper-flagellated phenotype coupled with a high motility behavior. Moreover, cells that were subjected to oxidative stress presented increased biofilm formation. Altogether, our results suggest that a higher motile behavior and augmented capacity to form biofilm structures could work in addition to well-known antioxidant enzymes and non-enzymatic ROS scavenging mechanisms to cope with oxidative stress at low oxygen tensions. Fil: Solar Venero, Esmeralda Clara. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina Fil: Ricardi, Martiniano María. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Fisiología, Biología Molecular y Neurociencias. ... |
format |
Article in Journal/Newspaper |
author |
Solar Venero, Esmeralda Clara Ricardi, Martiniano María Gomez Lozano, María Molin, Søren Tribelli, Paula Maria López, Nancy Beatriz |
author_facet |
Solar Venero, Esmeralda Clara Ricardi, Martiniano María Gomez Lozano, María Molin, Søren Tribelli, Paula Maria López, Nancy Beatriz |
author_sort |
Solar Venero, Esmeralda Clara |
title |
Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis |
title_short |
Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis |
title_full |
Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis |
title_fullStr |
Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis |
title_full_unstemmed |
Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis |
title_sort |
oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the antarctic bacterium pseudomonas extremaustralis |
publisher |
Springer Tokyo |
url |
http://hdl.handle.net/11336/123265 |
long_lat |
ENVELOPE(-62.700,-62.700,-74.433,-74.433) |
geographic |
Antarctic The Antarctic Argentina Esmeralda |
geographic_facet |
Antarctic The Antarctic Argentina Esmeralda |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00792-019-01110-x http://hdl.handle.net/11336/123265 Solar Venero, Esmeralda Clara; Ricardi, Martiniano María; Gomez Lozano, María; Molin, Søren; Tribelli, Paula Maria; et al.; Oxidative stress under low oxygen conditions triggers hyperflagellation and motility in the Antarctic bacterium Pseudomonas extremaustralis; Springer Tokyo; Extremophiles; 23; 5; 6-2019; 587-597 1431-0651 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00792-019-01110-x |
container_title |
Extremophiles |
container_volume |
23 |
container_issue |
5 |
container_start_page |
587 |
op_container_end_page |
597 |
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1779309142710681600 |